systembc | cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86

General

Target

cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe
Size

122KB
MD5

2085da3926285d53a13b68175bdf2ccb
SHA1

0853c04cd6646e3a33145d240290298a89eb3828
SHA256

cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86
SHA512

7d13b931cfed63123107abc0a0ab5c6f3a616c5b22194bfb64e3b5035e94ee0b3a855f1a113eb4b214e0ebf9d328a54f11a855c0a7a897079e098b8c842ada24

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

dasd13d.com:4035

dasd13d.xyz:4035

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

batmeh.exe

pid process

4088 batmeh.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

5 api.ipify.org
4 api.ipify.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
4088	batmeh.exe

flow	ioc
5	api.ipify.org
4	api.ipify.org

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{4F8CE699-6DBA-4850-A5BF-991AC404D8DA}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{397385AA-FA6B-4E0C-B59B-32DAA9BC51E0}.catalogItem	svchost.exe

Drops file in Windows directory 2 IoCs

Processes:

cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe

description	ioc	process
File created	C:\Windows\Tasks\batmeh.job	cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe
File opened for modification	C:\Windows\Tasks\batmeh.job	cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1084 3808 WerFault.exe cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe

pid	pid_target	process	target process
1084	3808	WerFault.exe	cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe

pid	process
3808	cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe
3808	cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe

C:\Users\Admin\AppData\Local\Temp\cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe
"C:\Users\Admin\AppData\Local\Temp\cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:3808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3808 -s 484
2⤵
- Program crash
PID:1084

C:\ProgramData\ucivphv\batmeh.exe
C:\ProgramData\ucivphv\batmeh.exe start
1⤵
- Executes dropped EXE
PID:4088

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3808 -ip 3808
1⤵
PID:3800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Connection Proxy

1

T1090

Impact

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Downloads

C:\ProgramData\ucivphv\batmeh.exe
Filesize
122KB

MD5
2085da3926285d53a13b68175bdf2ccb

SHA1
0853c04cd6646e3a33145d240290298a89eb3828

SHA256
cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86

SHA512
7d13b931cfed63123107abc0a0ab5c6f3a616c5b22194bfb64e3b5035e94ee0b3a855f1a113eb4b214e0ebf9d328a54f11a855c0a7a897079e098b8c842ada24

Download Submit
C:\ProgramData\ucivphv\batmeh.exe
Filesize
122KB

MD5
2085da3926285d53a13b68175bdf2ccb

SHA1
0853c04cd6646e3a33145d240290298a89eb3828

SHA256
cfdcc3ea8f9cd2cf619e755da0d07d1501afaec23bc9f5d2ecc195625172ad86

SHA512
7d13b931cfed63123107abc0a0ab5c6f3a616c5b22194bfb64e3b5035e94ee0b3a855f1a113eb4b214e0ebf9d328a54f11a855c0a7a897079e098b8c842ada24

Download Submit
memory/3808-131-0x0000000000A50000-0x0000000000A59000-memory.dmp

Filesize
36KB

Download
memory/3808-130-0x0000000000AB8000-0x0000000000ABF000-memory.dmp

Filesize
28KB

Download
memory/3808-132-0x0000000000400000-0x00000000008BC000-memory.dmp

Filesize
4.7MB

Download
memory/4088-135-0x00000000008E3000-0x00000000008E9000-memory.dmp

Filesize
24KB

Download
memory/4088-136-0x0000000000A30000-0x0000000000A39000-memory.dmp

Filesize
36KB

Download
memory/4088-137-0x0000000000400000-0x00000000008BC000-memory.dmp

Filesize
4.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads